201212101002020 has 48 divisors (see below), whose sum is σ = 429483550053936. Its totient is φ = 79163358912000.

The previous prime is 201212101001987. The next prime is 201212101002043. The reversal of 201212101002020 is 20200101212102.

It can be written as a sum of positive squares in 8 ways, for example, as 42977438495524 + 158234662506496 = 6555718^2 + 12579136^2 .

It is a junction number, because it is equal to n+sod(n) for n = 201212101001986 and 201212101002004.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 45237410 + ... + 49485830.

It is an arithmetic number, because the mean of its divisors is an integer number (8947573959457).

Almost surely, 2^{201212101002020} is an apocalyptic number.

201212101002020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

201212101002020 is an abundant number, since it is smaller than the sum of its proper divisors (228271449051916).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

201212101002020 is a wasteful number, since it uses less digits than its factorization.

201212101002020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4287312 (or 4287310 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 201212101002020 its reverse (20200101212102), we get a palindrome (221412202214122).

The spelling of 201212101002020 in words is "two hundred one trillion, two hundred twelve billion, one hundred one million, two thousand, twenty".